Tcebicated



L. S. LONGENECKER.

SEPARATING ROTOR. APPLICATION FILED MAR. 11. 1922.

1 ,427 @G 1 Patenm; Aug. 22, 19.

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LEVI S. LONGENECKER, OF WASHINGTON, DISTRICT OF COLUMBIA, DEDICATED, BY MESNE ASSIGNMENTS, T E IPEQIPLE 0h THE UNITED STATES.

SEPARATING ROTOR.

Specification of Letters Patent.

Patented Aug. 22, 1922.,

Application filed March Ill, 1922. Serial No. 543,074.

(FILED nurse-rue .acr or nancn a, 1883, 22 srar. 1a., e25.

To all whom it may concern:

Be it known that l, LEVI S. LoNcENEcKnn,

a citizen of the United States of America,

and an employee of the Department of Agri culture of the United States of America, residing at Washington, District of Columbia, have invented a new and useful Separating Rotor, of which the following is a specifipneumatic way of cation.

This application is made under the act of March 3, 1883, chapter 143 (22 Stat, 625) and the invention herein described and claimed may be used by the Government of the United States,its oiiicers and employees, and by any person in the United States either in public or private worlr without payment to me of any royalty thereon. I hereb dedicate thcsame to the free use of the Gibvernment and the people of the United States. I a

The object ofmy invention is to provide a rotor the purpose and function of which is to cause the .separation'ofheavyfrom light particles in a current of air or gas in which they are being carried. The invention may be used in a number of ways, such as an aspirator for elevators in dust-removal operations; asa sifting machine; for dockage removalon threshing machines; as a complete dust separatorwhen a bucket type design of vane is used; as a pneumatic method of handling grain, as in an elevator; as a handling powdered materials, etc. I 7

- The invention consists substantially in the construction, combination, location and arrangement ofparts, all as will be more fully hereinafter set forth as shown in the accompanying drawings and finally set forth in the appended claims.

Referring to the accompanying drawmgs and to the various views and reference-signs appearing thereon, Figure of the separatingrotor, and Figure H is a side view of the separating rotor attached to a fan.

In the drawings, A represents a solid rimlike section supporting the radial sections B to which are attached the vanes C. These vanes may be straight or curved and are made at any an le less than 90 degrees with radial sections Vanes C are directly connected to radial of radial sections-B. The openings D are l is a plan view sections B or a continuance 7 end of the radial sections B.

' The. main trunk pipe line 1 conveys the particle-laden air or gas to the fan. 2 represents the throat of the fan in which the rotor separator 3 revolves. 7 is the "fan casmg inclosing the fan 5. 5 is the movable fan element which causes the air or gas to move at a certain velocity. Moving at this velocity it is capable of carrying particles of certain size and weight. This aggregate then hits the moving rotor-3, which derives its rotation from the fan 5, with a certain impact. If this impact is great enough to cause suficient friction between the rotor and the particles, they will then receive their motion from the. rotor and be thrown back the discharge in chamber 4: and the discharge in opening 6 is directly determined by some relation which exists between the velocity of the aggregate and the periphery speed of the rotor vanes. Both the velocity and the periphery speed are variables which can be changed at will by suitable changes in the construction. By this means it is evident that a wide varietyof separations may be secured, which are equivalent to similar separations as made by sifting with difierent size sieves.

,The air and particles in pipe 1 are in a thoroughly mixed with the same velocity through the pipe towards the rotor 3. This mixture, moving through the throat of the fan 2, comes in contact with the fast moving vanes C of the rotor 3. The heavier particles, having con-' siderable weight, strike against the vanes C with considerable force, which in turn creates enough friction on the vanes C so that the rotor can by this medium impart some oi its motion to them. This imparted mo- The air or gas being very light.

[condition and mowing through the o enings D of the rotor tion is great. enough to counteract the pull of dust being very light strike vanes C with little or no friction, hence rotor 3 imparts little or no motion to them, the result being that the air and dust are forced through the openings D in rotor 3, and then caught on the fan paddle '5 and pushed on out the discharge opening 6. As the velocity is increased, the rotor construction remaining the same, the dust or smaller particles discharged with the air through opening 6 will increase in size and weight. The size and weight of these particles can also be increased or decreased by cutting away or adding to the vanes C.

It is obvious that many variations and changes in the details of construction and arrangement would readily suggest themselves to persons skilled in the'art and still fall within the spirit and scope of my invention. I do not desire, therefore, to be limited or restricted to the exact construction and arrangement shown and described; but

I claim:

' 1. In a separator, a conduit, means for creating a stream therethrough of a fluidmedium bearing particles to be separated, a rotor mounted in said conduit having a ertures for the passage of said fluid medium and having particle-engaging members adversely thereof, said disk-rotor having apertures for the passage of said fluid medlum and having particle-engaging members in- ",clined from the plane of rotatiori of said disk-rotor at an angle causing said particleengaging members to describe a sweeplng action on said particles in a direction transversely of the general direction of'movetor mounted ment'of said stream through said conduit.

3. In a separator, a conduit, means ,for creating a stream thereth-rough of a fluid medium bear-in particles to be separated, a roin said conduit transversely thereof, said rotor having apertures for the Mercer passage of said fluid medium and radially extending particle-intercepting vanes inclined from the plane of rotation of said rotor toward the up-stream side of said fluid medium traversing said conduit.

4. In a separator, a conduit, means for creating a stream therethrough of a fluid medium bearing particles to be separated, a rotormounted 1n said conduit transversely .thereof, said rotor having apertures for the passage of said fluid medium and particleintercepting vanes radially extending from the axis of said rotor, inclined from the plane of rotation of said rotor toward the upstream side of said fluid medium and increasing in area radially outward from said axis.

5. In a separator, a fiat disk adapted to be attached to the intake side of a fan, said disk comprising a. rim, a section located centrally within said rim, radial sections one end of each of which is secured to said rim and the other end of said centrally located section, vanes attached to the said radial sections atan angle less than ninety degrees therewith, said radial sections and vanes beingspaced apart so as to provide openings for the passage therethrough of a fluid medium.

6. In a dust separator, a rotor attached to a fan, said rotor comprising a rim, a section located centrall within said rim, radial sections, one end 0 which is secured to said rim, the other end of which is secured to said centrally located section, vanes attached to the said radial sections at an angle less than ninety degrees therewith, said radial sections and vanes being spaced apart so as to provide openings for the passage therethrough of air and dust.

' 7. In a separator, a conduit, means for creating a stream therethrough of a fluld medium bearing particles to be separated, a

rotor mounted in said conduit transversely thereof, said rotor having apertures for the passage of said fluid medium and articleintercepting elements, said artic e-intercepting elementseach. comprising two parts presenting a pocket open to the u stream side of said fluid medmm and wit one of said parts extending from the other in the direction of and in the plane of rotation of said rotor.

LEVI s. LONGENECKER. 

